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Using and Porting GNU Fortran

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15.3.34 Better Warnings

Because of how g77 generates code via the back end, it doesn't always provide warnings the user wants. Consider:


Currently, the above is not flagged as a case of using an uninitialized variable, because g77 generates a run-time library call that looks, to the GBE, like it might actually modify `A' at run time. (And, in fact, depending on the previous run-time library call, it would!)

Fixing this requires one of the following:

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